it ended with the algerian government launching an assault. yesterday morning. dozens are left dead. brian ross has the details. >>> the algerian army's third the final assault came after four days. bp ran the facility. over the course of the siege, 23 hostages died. >> for our people in algeria, for their family and their friends, it has been and continues to be a distressing and horrific time. >> two americans remain unaccounted for and a third has been identified as killed. 58-year-old fred of katie, texas. survivors said the attackers focused only on americans and westerners. including a large british contingent. >> we believe that there are three british nationals dead and others are dead. >> the good news was most of the approximately 100 western workers were freed or escaped. algerian tv aired what had said was home video taken by one hostage as a group made their escape across the desert, often past bodies. the algerians said they killed at least 32 of the terrorists. their bodies displayed on algerian tv. they were heavily armed with heavy weapons and e